This 4-pack of PVC-coated hardened steel hangers accommodate heavy 22 caliber and larger handguns. It can slide onto .5" to 1" thick shelf.This 4-pack of PVC-coated hardened steel hangers accommodate heavy 22 caliber and larger handguns. Slide onto 1/2 to 1 inches thick shelf. Features: Hardened steel wire supports heavy handguns (22 caliber and larger) PVC coating won't scratch or damage handgun finish Maximizes storage in your gun safe or cabinet Slide onto 1/2 to 1 inches thick shelf